we always got questions from our clients that how many liters hydraulic oil should be add into the diaphragm pump ?
please see below confirmation:
DP6818: 0.95 – 1.0L (2 – 3mm distance to the top level)
DP6820: 0.8 – 0.9L (5 – 10mm distance to the top level)
DP6825 / 6830 / 6835: 1.0L (10mm distance to the top level)
DP6845 / 6800: 1.1L (3mm distance to the top level)
The oil is 46# anti-wear hydraulic oil normally. but you can chose Good quality oil like Shell Tellus High Performance Hydraulic Oil 46# . The oil is about 85-90% full, MUST not 100% full. please see below picture.